[PATCH] memcg: memcg_check_events: silent unused variable warning

[Andrew Morton]

do_numainfo is used only if MAX_NUMNODES > 1 so we have a following
warning for UMA machines.

CC      mm/memcontrol.o
mm/memcontrol.c: In function 'memcg_check_events':
mm/memcontrol.c:779:22: warning: unused variable 'do_numainfo'

Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxx>
Acked-by: Kirill A. Shutemov <kirill@xxxxxxxxxxxxx>
---
 mm/memcontrol.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index bf29761..5f805cc 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -708,7 +708,8 @@ static void memcg_check_events(struct mem_cgroup *memcg, struct page *page)
 	/* threshold event is triggered in finer grain than soft limit */
 	if (unlikely(mem_cgroup_event_ratelimit(memcg,
 						MEM_CGROUP_TARGET_THRESH))) {
-		bool do_softlimit, do_numainfo;
+		bool do_softlimit;
+		bool do_numainfo __maybe_unused;
 
 		do_softlimit = mem_cgroup_event_ratelimit(memcg,
 						MEM_CGROUP_TARGET_SOFTLIMIT);
-- 
1.7.8.3


-- 
Michal Hocko
SUSE Labs
SUSE LINUX s.r.o.
Lihovarska 1060/12
190 00 Praha 9    
Czech Republic
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